Crop protection

Prince Charles 'anguished' by death of British trees from new pests and disease

The Prince of Wales has lamented the "appalling tragedy" of Britain’s lost trees, saying even native oaks are now a "deep cause for concern". The Prince, who spoke of his personal “anguish”, said the “new or increasing” threats of pests and disease are an “appalling tragedy for everyone who loves trees…

...Ciao and Shalom

Improving the feasibility of limonium for exports to distant destination markets

Limonium, a.k.a. Statice, Caspia, Sea Lavender, Misty, or Marsh-Rosemary, is one of the world’s 20 top-selling cut flowers, many of the  120 -150 varieties are endemic to the Mediterranean region. Symbolizing fond memories and sympathy, it is often part of memorial wreaths, bouquets and floral arrangements…

UF researchers link gene from ancient virus with plant stature

A new study from the University of Florida links the ability of plants to grow to great heights to a 500-million-year-old interaction between a virus and a type of algae. “The…

Niagara College Greenhouse Nursery cat officially named

Niagara College is introducing Scout, the new Niagara College Greenhouse Nursery cat. Over 1,800 name submissions were received. The name was chosen because Scout will be hunting for mice, as well as scouting out new students. Scout has his own Instagram account at…

HRI scholarship recipient to focus on ornamental plant research

The Horticultural Research Institute (HRI), the AmericanHort foundation, in conjunction with the Ohio Nursery and Landscape Association (ONLA) has named Ohio State University graduate student Coralie Farinas as its 2019-2020 Bryan A. Champion Memorial Scholarship recipient. The funds will help Coralie…

International journal highlights myrtle rust resistance research

Grant Smith, Plant and Food Principal Scientist/Program Leader has had an article published in American Phytopathological Society (APS) journal (Jan 2020) based on his…

'Rule breaking' plants may be climate change survivors

Plants that break some ecological rules by adapting to new environments in unconventional ways could have a higher chance of surviving the impacts of climate change, according to a new study from researchers at the University of Sydney, Trinity College Dublin and the University of Queensland. Professor…

Score real silver at Cindro at HortiContact:

"The effect of silver, that's golden"

For a number of years now, Cindro, producer of among other products the silver-stabilized hydrogen peroxide Oxyl-PRO®S, has been working hard to help growers prevent diseases and pests in their greenhouse. Also bio-stimulants contribute to healthy growth, including the latest in the Cindro product line: Sinergy® GrowShield. Photo: The silver plates are ready "We believe t…

US (MI): Greenhouse disease and insect management recommendations for 2020

Michigan State University Extension has updated their insect and disease management recommendations for the 2020 greenhouse season. There have been some changes from the previous 2019 recommendations. These recommendations are updated yearly to reflect efficacy of pesticides as MSU Extension specialists and…

Australia: Detection dogs track down rare orchid

Detection dogs Missy and Taz of OWAD Environment were brought in by NSW Government’s Saving our Species (SoS) program and the National Parks and Wildlife Service (NPWS) after staff spent fruitless days searching for new orchid populations. Discovered by a member of the public, the orchid is being…

Foliar nematode: Angular leaf spots can be confusing to diagnose

Angular (vein-delimited) leaf spots on ornamental plants are often attributed to bacterial pathogens. However, multiple different pathogens can cause similar-looking leaf spots including fungi, downy mildews, and foliar nematodes. Diagnosis can sometimes be confusing (see Figures 6, 7, and 8). This was…

Koppert collaborates to launch free biocontrol tool

The CABI* BioProtection Portal – an online resource to raise awareness of biological crop protection options for growers – has been launched in Kenya. Koppert Biological Systems is one of the partners to share its expertise to produce an innovative free-to-use tool to help growers reduce their reliance…

Southwest Michigan floriculture report – February insect update

It’s unusual to find the Florida fern caterpillar in Michigan, especially in February, but that’s what several southwest Michigan growers have found in their Boston ferns. As a group, caterpillars are barely an afterthought in spring floriculture crops. It’s rare to find them and even when we do, they…

Jürgen Brokelman appointed as Commercial Manager at HortiPro

HortiPro has developed in recent years as a producer and distributor of biological and natural plant protection products in the European market. Due to the strong growth of the company, the management of HortiPro has decided to strengthen itself with Jürgen Brokelman, who will take up his new task on 1…

How digital pest and disease mapping can boost flower output

Mapping of pests and diseases in horticulture is still often a manual, inaccurate and inefficient process relying on paper-based analysis and individual knowledge. Farms use a team of scouts to collect data on many hectares of greenhouses and measure the effectiveness of pesticide spraying. Using these…

KoppertWednesday event

Partners with nature; a marriage or living apart together?

What's the partnership we have with nature – is it a marriage or are we better off living apart together? That was the question put to the panel during KoppertWednesday, the event organized by Koppert Biological Systems during the Fruit Logistica week. The moderator, Maren Schoormans, gave the floor to…

US: House passes SAF-backed measure to hire more ag inspectors

The House of Representatives passed a bill Monday that will add hundreds of new agriculture inspectors to U.S. ports of entry. Earlier this month, the Society of American Florists signed a letter of support for the bill, seeing it as a way to strengthen the scrutiny of pests and diseases at those ports…

See how drones will fly through your greenhouse

Last week PATS released their official demo video at the ‘Fruitnet World of Fresh Ideas’ prior to the start of the Fruit Logistica 2020 exhibition. The video shows more about their solution and how this helps growers to tackle difficult pests. For more information:PATS+31 (0)6 330 876 50info@pats-drones.compats-drones.com 

March 12, West Olive

US (MI): Winter nursery meeting to cover emerging issues

Michigan State University Extension will be offering the 2020 Winter Nursery Meeting for nursery and tree growers on March 12 at the Ottawa County MSU Extension Office, 12220…

Nosema maddoxi is an entomopathogen infecting Halyomorpha halys in the US

In 2017, Nosema maddoxi (Microsporidia: Nosematidae) was described as a pathogen of the brown marmorated stink bug, Halyomorpha halys (Hemiptera: Pentatomidae). Nosema maddoxi is a microsporidian infecting H. halys. Microsporidia are intracellular, obligate fungal parasites that usually cause chronic infections…

Certis USA announces CEO transition

Certis USA announced that President and CEO, Jow-Lih Su, PhD will transition his duties this year after nearly 20 years building Certis USA into one of the world’s leading…

@QueensFlowers

The Queen's Flowers

Mondays are better with flowers! #MondayMotivation pic.twitter.com/S8K4w8msPk — The Queen's Flowers (@QueensFlowers) February 10, 2020  

Thursday is Bug Day at Peace Tree Farm

Thursday is bug day at Peace Tree. "It’s the day that our Biocontrol team crisscrosses our greenhouses to replenish and maintain our army of beneficial insects", the grower explains. "They distribute sachets, release predators and parasites, and utilize our custom Bugzooka to launch and evenly spread…

Groundnut bud necrosis virus infecting anthurium in India

Anthurium, belonging to the Araceae family is a crop of commercial importance in India and many other countries. It is cultivated for its beautiful cut flowers, cut foliage and as a potted plant. In 2016, anthurium grown in greenhouses on the RHREC campus, GKVK Bengaluru, Karnataka, India, showed various…

Bumblebees carry heavy loads in economy mode

Bumblebees are the big lifters of the insect world, able to fly back to the hive with almost their own body weight in nectar on board. A study published Feb. 5 in Science Advances shows how they do it — and that bees can show more flexibility in behavior than you might expect from a bumbling insect.  “They…

Post harvest handling of cut flowers

Cut flowers are highly perishable compared to other horticultural or agricultural produce making post-harvest losses on flowers significant compared to other produce. The nature and extent of post-harvest loss is typical for each variety. Dealing with export of fresh cut flowers and especially to long…

Kemin Crop Technologies names Vince Livengood Regional Sales Manager

Kemin Crop Technologies, the Kemin Industries business unit focused on providing crop protection and crop health solutions for commercial greenhouses and specialty crops, has announced that Vince Livengood, who previously served as Technical Services Manager for Kemin Crop Technologies, has been named…

Australia looks to alternative pollinators to support apiarists and industry

As the bushfire crisis across Australia continues, so too does the threat to wildlife including bees which are crucial for successful pollination. Early assessment has indicated that more than 10,000 honey bee hives have been destroyed across the Australian mainland and around 800 hives and 115 nucleus…

Kenya: Regional Flower Growers & Exporters Forum

The Regional Flower Growers & Exporters forum has seen Fresh Produce Exporters Association of Kenya (FPEAK) and Kenya Flower Council (KFC) tour various counties in order to sensitize on the implications of False Coddling Moth on Roses as a hindrance to continued market access. So far, the forum has taken…

UF launches new online graduate certificate program addressing nuisance plants

As a youngster growing up in Buffalo, New York, Mike Sowinski wanted to work with bald eagles. Through his college biology and fisheries management courses, he became interested in what the birds eat – fish. Sowinski established a decade-long career with the Florida Fish and Wildlife Conservation…

Research into preventing Bemisia tabaci

Glastuinbouw Nederland and over 50 poinsettia growers concluded the 2019 poinsettia season with a crop event on 16 January. As has become traditional, they visited the lifespan test in the Royal FloraHolland lifespan testing room. The rest of the programme took place at World Horti Center, where Arthur…

Identification and management of liverwort in greenhouses

Liverwort is one of the major weeds in greenhouse and nursery production. Historically, liverwort has been reported as weed problem in cooler regions of the the United States including the Northeast and Pacific Northwest. It is primarily a problem in herbaceous perennials, woody ornamentals, or those…

Luxembourg becomes the first EU country to ban glyphosate

Luxembourg will be the first EU country to ban glyphosate starting February. The veto on this pesticide suspected of causing cancer will have three stages and will be…

Joop van Lenteren (WUR) delved into the present and past in new book

"Use of biological fighters on large scale in South America and the Caribbean surprising"

The fact that there are efficient natural enemies for pest control in South America gives hope for biological control options in Europe, should the pests settle here, says professor Joop van Lenteren from Wageningen University & Research. Together with three colleagues from Latin America, he published a book about biological pest control in South America and the Ca…

Pedestal Insect Growth Regulator gets California registration

OHP announced the California state registration of Pedestal Insect Growth Regulator. Pedestal is now available for sale through authorized OHP distributors in California as well as in other states. Pedestal, with the active ingredient novaluron, is a suspension concentrate formulation labeled for use on ornamentals…

2020 UK Pesticide Guide available

The 2020 BCPC UK Pesticide Guide, with the latest information for those involved in pesticide use and application, is now available to buy in print form. The ‘Green Book’, and its online equivalent at ukpesticideguide.co.uk, is a reference for a wide range of audiences involved in pesticide use and recommendation. It covers all pesticide products…

The double scourge of powdery mildew

Mention “powdery mildew” to a cannabis grower and they turn white. Mention the same words to a floriculture grower and all they can think of is how much pesticide spraying they’ll have to do to eliminate the pathogen. by Carl Silverberg For many growers, the big expense isn’t the cost of the pesticides or dumping…

US (VA): Pest Management Guide - Horticultural and Forest Crops, 2019

The 2019 Pest Management Guides are available in PDF format and are divided into three volumes: Field Crops (456-016), Horticultural and Forest Crops (456-017), and Home…

Australian industry gets involved in International Year of Plant Health

The United Nations has declared 2020 ‘International Year of Plant Health. Led by the global UN Food and Agriculture Organisation, the aim is to highlight the importance of protecting plants and is putting a spotlight on biosecurity. With plant industries contributing over $30 billion annually, the…

Map outlines most endangered plants of the U.S.

A recent study estimates that the number of plants that have disappeared since 1750 is double that of all birds, mammals, and amphibians combined. Sadly, not many people seem to be aware of that. To raise awareness, a team of researchers and artists collaborated to celebrate the fragile existence of…

Iran: Phyllosticta capitalensis causing leaf spots on ornamental Magnolia and Syringa

Magnolia grandiflora is a medicinal and horticultural plant species in the family Magnoliaceae which is native to North America (Li et al., 2013). Syringa reticulate is a tree in the family Oleaceae which is native to Japan (Green et al., 1995). During autumn 2017, leaf spots were observed on Magnolia grandiflora…

Biotalys and Chrysal announce collaboration

Evaluating the potential of biofungicide in ornamental crops

Biotalys, a Food and Crop protection company developing a new generation of protein-based biocontrols, announces a collaboration with Chrysal to protect flowers against fungal…

Calcium application method impacts botrytis blight severity on petunia flowers

Two application methods of calcium (Ca), fertigation and spray, were investigated regarding their effects on Botrytis blight on petunia ( Petunia × hybrida ) flowers. Plants were grown for 6 weeks with three nutrient solutions consisting of 0, 100, or 200 mg·L ⁻¹ Ca and weekly calcium chloride (CaCl 2 ) sprays…

Destructive swarm of desert locusts entering Kenya

After destroying horticultural lands in Ethiopia and Somalia, a destructive swarm of desert locusts have moved south to Kenya. Last week, they entered the country, and they're making their way south. Actions are being taken to control the situation, but the threat is not over, explains Martin Dyer, owner…

European Union will no longer permit sales of chlorpyrifos

The European Union has confirmed it will no longer permit sales of the widely used actives in insecticides chlorpyrifos and chlorpyrifos-methyl; after 31/01/2020. The move was…

"Native plants can flourish after bushfire, but there’s only so much they can take"

In a fire-blackened landscape, signs of life are everywhere. A riot of red and green leaves erupt from an otherwise dead-looking tree trunk, and the beginnings of wildflowers and grasses peek from the crunchy charcoal below. Much Australian flora has evolved to cope with fire, recovering by re-sprouting…

"Successful test results and proven technology against fungi"

Micothon has developed this chemical free application for combating fungi like mildew and botrytis in greenhouse crops. Multiple installations have been successfully implemented in 2019, thanks to a promising trial with the machine in the Dutch Wageningen University greenhouse, in which scientific…

How pest and disease mapping makes a difference to yield and cost control

Dr Lisbeth Riis, founder and CEO at Scarab Solutions, has explained how the cut flower industry can significantly benefit by replicating the principles of digital mapping of pests and diseases to the plants in their greenhouses. Pest and disease mapping in any environment has far-reaching effects. Thirty…

Are invasive patterns of non-native insects related to woody plants differing between Europe and China?

Forests are increasingly threatened worldwide by the establishment of non-native species arriving from other continents with globalization of trade and international travels. Researchers compiled comprehensive lists of non-native insects associated to woody plants in Europe and China to compare their…

New Zealand: Myrtle Rust and Kauri Dieback Strategic Science Advisory Groups to merge

The Myrtle Rust Strategic Science Advisory Group and the Kauri Dieback SSAG agreed to merge at a recent combined meeting to discuss the future of the two groups. The decision…

New broad-spectrum bactericide/fungicide protects wide variety of crops

BioSafe Systems released OxiDate 5.0, a peroxyacetic acid (PAA) based, broad spectrum liquid bactericide/fungicide registered to treat and control plant pathogens on a wide variety of crops. According to the company, OxiDate 5.0 ensures an increased ROI by delivering dependable results at a competitive…

UK: Dame Helen Mirren voices animation warning of ‘devastating’ plant disease

Dame Helen Mirren is backing efforts to keep deadly plant disease Xylella out of the UK by voicing an animation warning of the risks it poses. The bacterium Xylella fastidiosa can infect more than 500 species of plant, including garden favourites such as lavender, oleander, rosemary and flowering cherry.…

European Commission bans thiacloprid

The European Commission decided not to renew the approval of a neonicotinoid called thiacloprid, following scientific advice by EFSA (the European Food Safety Authority) that…

Impacts of myrtle rust in New Zealand since its arrival in 2017

Myrtle rust, caused by Austropuccinia psidii, is an invasive fungal disease that affects plants in the myrtle family, the Myrtaceae. Of the almost 6,000 Myrtaceae species worldwide about 480 are currently recorded as hosts, but the host range is considered to be expanding. Myrtle rust originated in South…

New Zealand: New long-term monitoring form for myrtle rust

A long-term monitoring form for myrtle rust has been developed and is available on www.myrtlerust.org.nz for surveillance in New Zealand. The form is designed to be used by a wide variety of groups who have some level of knowledge of myrtle rust symptoms and who will be monitoring symptoms on specific…

Ralstonia eradicated in the Netherlands

Eradication is confirmed of the first finding of Ralstonia solanacearum (race 1) in the Netherlands at glasshouse companies producing ornamental Rosa plants for planting for cut flower production. The first finding was triggered following symptoms observed by the grower. The identity of R. solanacearum…

American serpentine leafminer: A threat to all of horticulture

The American serpentine leafminer (Liriomyza trifolii) is a small fly belonging to the family Agromyzidae, that infects plants from 29 plant families including many ornamental, vegetable and legume crops. Though not yet present in Australia, Liriomyza trifolii poses a significant threat to our…

WSU scientists find a slate of unexpected diseases in peony

Farmers in Washington, Alaska, Oregon, and other states grow the peony for a thriving domestic market, but these growers are often stymied when diseases strike their crops. Instead of stunning blooms, they’re left with wilted, sick plants and fewer flowers to sell. Often, they’re not sure exactly what is…

"As a prevention measure against Pythium, we are introducing Asperello in phalaenopsis"

Microflor opts for biological alternatives

Based in Lochristi, Belgium, Microflor is increasingly choosing biological products to protect its young phalaenopsis plants. To prevent the fungal disease Pythium, the breeding and propagation company uses Asperello T34 Biocontrol. Arne Steelandt, Quality and R&D Coordinator at Microflor, shares his…

Luring pests with LED lamps

The thrips is a pest insect dreaded by horticulturalists. Rob van Tolhas designed a trap for catching the insects using LED light. Butwhat light composition are they most attracted too? It turned outthat Dutch and German thrips have different ideas about that. In the giant greenhouse at the chrysanthemum nursery G&C Flowers in…

Integrating pesticides with biological control agents: Can it be done?

Raymond Cloyd, Kansas State University, presented Integrating Pesticides with Biological Control Agents: Can It Be Done at the Great Lakes Expo in Grand Rapids. More than 100 attendees listened to the talk about the controversial issue of using pesticides in conjunction with biological control agents, such…

Reducing water and pesticide movement in nursery production

Ornamental nurseries produce a large number of plants in a concentrated area where high inputs of water, nutrients, and pesticides are used. Nursery production further…

The rugose virus threat – Will it affect your spring crops?

If you are a Canadian ornamental grower that also grows tomato liners as part of your spring crop selection, or if you grow ornamental peppers, here is what you need to know regarding Rugose symptoms, prevention and more importantly, regulations. Although it does not pose a food safety risk, Rugose…

Beneficial Insectary introduces newest IPM Specialist

Erik van der Sluys received a degree in Ecological Systems and minor in Biology in 2014 from Seattle University. Since then, he has worked as a Farm Manager for Seattle University, a Grower for TKO Reserve, and an IPM Technician for Iwasaki Brothers INC using BCA releases on a wide variety of crops. He…

Kenya: Rose exports at risk due to papaya bug

Kenya Plant Health Inspectorate Service (Kephis) said the mealybug, which has so far devastated papaya in the coastal region, poses a serious threat to roses and vegetables. Kephis managing director Esther Kimani called for quick intervention to tame the spread, warning that failure to do so could…

What the new Plant Health Regulations mean for British businesses

With just days to go until the new Plant Health Regulations (PHR) come into force, DEFRA reminds business of actions that need to be taken to continue to trade from 14th December 2019. What is the new Plant Health Regulation (PHR)?The PHR is part of a wider set of changes which are being introduced…

February 4, Aurora

US (OR): HRI & OAN team up to present boxwood health workshop

The Oregon Association of Nurseries is teaming up with the Horticultural Research Institute to bring you a full day of seminars with experts from around the nation discussing boxwood blight best management practices. Designed to educate growers, each session will provide the attendees with the latest…

"Asperello proves good fit in existing IPM program"

Rainbow Greenhouses located in Chilliwack, British Columbia (BC), Canada, is a large-scale wholesale producer and distributor of a range of indoor, outdoor and seasonal plants. The company operates from two large facilities in BC and another facility in Southern Alberta totaling some 17 hectares. While…

A solution for clean water in the flower bulb sector

The Dutch flower bulb sector is facing a number of challenges, including the quality of the wash water used. When flower bulbs are harvested, a large amount of soil is still attached. When this soil is washed off, fungi, viruses (such as acid and PIAMV) and pesticide residue get into the water. In this…

"Perfect potted hydrangeas for super-strict customers"

A shrinking number of pest control products and more stringent requirements are making crop protection across all crops that bit more complicated. Potted hydrangeas are no exception, and here too, biology is becoming increasingly significant. Dutch plant nursery P. van Geest is extremely satisfied with…

Nutrimite shown to also boost montdorensis

“In many ornamental crops establishing predators can prove highly challenging. In absence of the pest no predatory mites will establish, unless we keep reintroducing them onto the plants,” says Senior Biobest Researcher Juliette Pijnakker. Previous work with Swirskii-System showed that this problem could…

Students devise method to stop dissemination of Xylella fastidiosa

The Wageningen team has taken second place at the international student iGEM competition. The team, composed of 11 talented students from Wageningen, came up with a method to stop the dissemination of the dangerous plant pathogen, Xylella fastidiosa. This bacterium is a world-wide threat to over 350…

Boxwood Blight Update: 2019

Since its introduction to the United States is 2011, boxwood blight has been found in 26 states. Its affects have been seen from the Mid-Atlantic to the west coast in varying degrees. One of the biggest contributing factors to the prevalence and spread of this disease is climate. Boxwood blight requires specific environmental conditions which vary year to…

Increase in thrips infestation demands more R&D

Thrips have long been a major threat to crops, but worryingly, the number of species of thrips around the globe is on the increase, and they are spreading more easily. More worryingly though is the fact that there isn’t yet a biological solution to control every species in every crop. Koppert is,…

Responsible Industry for a Sound Environment appoints new President

The Governing Board of RISE (Responsible Industry for a Sound Environment) has appointed Megan Provost as the association’s new President. Provost brings a strong background…

Gowan acquires two new active ingredients from Bayer

Gowan Crop Protection Limited has entered into agreements with Bayer to acquire rights to the active ingredients Fenamidone and Pencycuron. The acquisition includes product…

Using pathogen-specific viruses to control pathogen outbreaks

Precision medicine for plants

Researchers from the Utrecht University, in collaboration with colleagues at the University of York (UK) and the Nanjing Agricultural University (China) have developed a new technology to selectively destroy the pathogen that causes the devastating wilt disease without side effects on other beneficial microorganisms. Bacterial…

PRO-MIX Biofungicide + Mycorrhizae

Insect suppression in the root zone

Through years of research on active ingredients, Premier Tech has developed products with an optimal combination of Biofungicide (Bacillus pumilus) and Mycorrhizae (Glomus intraradices). PRO-MIX Biofungicide + Mycorrhizae is a line of growing media products that includes active ingredients protecting…

December Pest of the Month: Foliar nematode

Aphelenchoides fragariae is a foliar nematode which is widely distributed through the tropical and temperate zones around the world and is the primary target of quarantine checks for imported strawberry material throughout Asia, Russia, and the USA. It is a frequent and economic pest of strawberries,…


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